I'm running DSL-N on a Pentium III 667 MHz (384 MB RAM) from the live CD.

The core aspects of the user experience seem fine, except that DSL-N failed to detect the scroll wheel on my USB mouse. I've seen this complaint elsewhere in the Forum, but I don't think anyone responded, so let me register the same complaint again (I doubt I'm the only one).

I'm searching for a lightweight distro to run on this old machine, and DSL-N seems okay, but I'm not sure about giving up Firefox for SeaMonkey, which seems to me a step backwards. Best of luck with your important and useful distro!